<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<style type="text/css">
	.parent{
		max-width:500px;
		margin:auto;
		overflow:hidden;
	}
	.child{
		float:left;
		width:50%;
		padding-bottom:9999px;
		margin-bottom:-9999px;
	}
	.child-1{
		background: red;
	}
	.child-2{
		background-color: blue;
	}
</style>
</head>
<body>
	<div class="parent">
		<div class=" child child-1" >
			<h3>title</h3>
			<h3>title1</h3>
			<h3>title2</h3>
			<h3>title3</h3>
		</div>
		<div class="child child-2">
			
		</div>
	</div>
</body>
</html>